Can stress or high blood pressure make your period become heavier after it was getting lighter towards end of period?

Possible. Sorry for such a vague start, but in medicine we are always taught that patients are handmade/1 of a kind & anything is possible. For the least trouble from your periods, do not be overweight. Avoid 100% (100%) dairy & be as close to vegan as possible. You will enjoy our websiet www.Thepmc.Org. Hrs, md, facc.